Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Answer B)

A. 0.06 m³ of ethane at 0.69 MPa and 26°C is allowed to expand isentropically in a
cylinder behind a piston to pressure of 0.105 MPa and a temperature of 107°C.
Calculate the work done during the expansion.
B. The same mass of ethane at 105 KPa and 107°C is compressed to 690 KPa
according to PVn = C , where n = 1.4. Calculate the final temperature of the ethane and
the heat flow to or from the cylinder walls during the compression.
Transcribed Image Text:A. 0.06 m³ of ethane at 0.69 MPa and 26°C is allowed to expand isentropically in a cylinder behind a piston to pressure of 0.105 MPa and a temperature of 107°C. Calculate the work done during the expansion. B. The same mass of ethane at 105 KPa and 107°C is compressed to 690 KPa according to PVn = C , where n = 1.4. Calculate the final temperature of the ethane and the heat flow to or from the cylinder walls during the compression.
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